Author: Dieter Buerssner
Date: 08:29:39 02/04/03
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On February 04, 2003 at 11:10:44, GuyHaworth wrote: > >Yes, I'm sure that was the problem. > >Eugene provides both the .nbw and .nbb sides of symmetric endgames in Rob Hyat's >ftp facility. > >So, I guess he can't assume that the chess-engine does the needful to only >require one half of the EGT. > >... and apparently Fritz6 does not. I think, earlier versions of Nalimov's code neede .nbw and .nbb of symmetrical endgames. Later this was changed (I think, when support of 6-men TBs was added). So, engines using the older code will need both, and newer code will only need one. Interestingly, KPKP is not set a symmetrical TB in EN's code (at least when I read it correctly). Also kpkp.nbw.emd and kpkp.nbb.emd differ here. Can this have anything to do, with ep? The list of the symmetrical TBs in the code I have here from EN is: knkn, kbkb, krkr, kqkq, knnknn, kbbkbb, krrkrr, kqqkqq. Regards, Dieter
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